Multiple pipe-fitting



F. McNAMARA.

MULTIPLE PIPE FlTTING.

APPLICATION FILED JAN. 11,4919.

1,362,718. I Patented Dec. 21,1920.

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F. McNAMARA.

MULTIPLE PIPE FITTING.

APPLICATION FILEDJAN.11, 1919.

Patented Dec. 21, 1920.

2 SHEETS-SHEET 2- awmwtoz FRANCIS MONAMARA, OF NEW ROCHELLE, NEW YORK.

MULTIPLE PIPE-FITTING.

Specification of Letters Patent.

Patented Dec. 21, 1920.

Application filed January 11, 1919. Serial No. 270,763.

To all whom it may concern: F

Be it known that I, FRANCIS MONAMABA, a citizen of the United States, residing at New Rochelle, in the county of WVestchester and State of New York, have invented new and useful Improvements in Multiple Pipe- Fittings, of which the following is a specification.

The present invention relates to improvements in fittings for drainage pipe systems, and particularly to a fitting intended to form a portion ofa main service stack and to.have a plurality of fixtures connected therewith.

It has been heretofore proposed to provide a fitting of this general character for household purposes adapted to'have, for example, a closet, lavatory, and a bath tub connected thereto. With the earlier structures for this purpose, however, trouble has been experienced due to the fact that the flow through the main branch or closet con nection of the fitting would cause a siphoning of the traps provided for; preventing the escape of gas through the lavatory and bath tub. 'With the earlier constructions also there was apt to be more or less of a siphoning action through the branches connecting the stack member with the lavatory and tub due to the flow through the main stack.

The object of the present invention isto provide a fitting which may be readily connected with a plurality of fixtures and in which the objections hereinbefore referred to incident to earlier constructions will be entirely avoided.

In the accompanying drawings,-

Figure 1 is an elevation of a fitting embodying the present invention.

Fig. 2 is a plan, partly in section, on the line 2-2 of Fig. 1.

Fig. Sis a sectional view on the line 3-3 of Fig. 2.

Fig. 4 is a section on the line 4-4 of Fig. 1.

Referring to the drawings, 1t Wlll. be seen that the fitting comprises a main body section 1 adapted to have its ends connected with the members of the main stack of a drainage system, in the ordinary manner, and a relatively large lateral branch 2 that is adapted for connection with a closet.

The branch 2 is shown as extending from the body 1 at an angle of substantially ninety degrees and is, as usual, of relatively large diameter. 1

The body 1 has a portion of its side wall deflected laterally to provide a pocket-like enlargement 3 thereof adjacent its upper end, and atone side of the main branch 2. As shown in the drawings, this pocket-like enlargement is arranged eccentric to the main passage through the body 1 and is so positioned that it extends a considerable dis tance abovethe plane of the branch 2. Said lateral enlargement of the body 1 constitutes in effect a second branch of the fitting, and

in said deflected wall are formed two interiorly threaded passages 4, 5, adapted to be respectively connected with the drain pipes of a lavatory and bath tub, or other fixtures.

The parts are so arranged that the outlets from the passages 4, 5 are situated entirely above the plane of flow through the main lateral branch 2 so that such flow will not exert a siphoning action on the pipes connected with said branch outlets in the manner that it would if it passed directly across them.-

The surfaces surrounding the outer ends of the passages 4:, 5 are arranged in 'a plane inclined to the body of the fitting and made smooth so that branch pipes may be readily and securely connected thereto.

It will be seen that the pocket formed in the body of the fitting is also situated at one side of the direct passage through the body 1, so that an air chamber is in efiect provided between the outlet ends of the passages 4, 5 and the column of water flowing through the stack.'

The manner of using and the advantages incident to a fitting constructed as above described and as shown in the drawings, will be readily appreciated. -I t'will be seen that the fitting may be employed in an ordinary stack construction and that the fixtures connected with the branch pipes 4, 5 will be entirely relieved from an siphoning action due to the flow through either the body 1 or the main lateral branch 2.

Having thus described the invention what is claimed is A drainage system pipe fitting comprising a body adapted to form part of a stack and having a portion of the wall of the of the body at one side and eccentric to the line of flow through said body, the body' member having interiorly-threaded passages or branches formed directly in the laterally 5 deflected Wall of said enlargement, and a main branch communicating with the passage through the body to one side of said branc es extending from the stack member above the plane of flow through the stack '10" member and the main branch.

In testimony whereof I have hereunto set my hand.

' FRANCIS MoNAMARA. 

